Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
- Autores
- Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.
Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; Argentina - Materia
-
Argentina
Autocorrelation Function
Management Unit
Precision Farming
Site Specific Management
Topographic Position Index (Tpi) - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/62260
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Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, ArgentinaMieza, María SoledadCravero, Walter RubenKovac, Federico DarioBargiano, Pablo GastónArgentinaAutocorrelation FunctionManagement UnitPrecision FarmingSite Specific ManagementTopographic Position Index (Tpi)https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; ArgentinaFil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; ArgentinaFil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; ArgentinaElsevier2016-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/62260Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-1670168-1699CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0168169916303568info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compag.2016.06.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:52Zoai:ri.conicet.gov.ar:11336/62260instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:43:53.078CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
title |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
spellingShingle |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina Mieza, María Soledad Argentina Autocorrelation Function Management Unit Precision Farming Site Specific Management Topographic Position Index (Tpi) |
title_short |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
title_full |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
title_fullStr |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
title_full_unstemmed |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
title_sort |
Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina |
dc.creator.none.fl_str_mv |
Mieza, María Soledad Cravero, Walter Ruben Kovac, Federico Dario Bargiano, Pablo Gastón |
author |
Mieza, María Soledad |
author_facet |
Mieza, María Soledad Cravero, Walter Ruben Kovac, Federico Dario Bargiano, Pablo Gastón |
author_role |
author |
author2 |
Cravero, Walter Ruben Kovac, Federico Dario Bargiano, Pablo Gastón |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Argentina Autocorrelation Function Management Unit Precision Farming Site Specific Management Topographic Position Index (Tpi) |
topic |
Argentina Autocorrelation Function Management Unit Precision Farming Site Specific Management Topographic Position Index (Tpi) |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software. Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina Fil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina Fil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; Argentina |
description |
In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/62260 Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-167 0168-1699 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/62260 |
identifier_str_mv |
Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-167 0168-1699 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0168169916303568 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compag.2016.06.005 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613380819648512 |
score |
13.070432 |